The question asks for the inauguration date of the 2019 Special Olympics World Summer Games. This is a factual question requiring knowledge of significant international events. We need to identify the correct date from the given options.
Correct Option: B) 14 March 2019
The 2019 Special Olympics World Summer Games were officially inaugurated on March 14, 2019, in Abu Dhabi, UAE. This date marks the beginning of the event.
We are given the ratio of the ages of a father and a son, and the product of their ages. We need to find the sum of their ages. We can represent their ages using a common multiplier based on the given ratio, form an equation using the product, solve for the multiplier, and then calculate their individual ages and their sum.
Let the age of the father be \(F\) and the age of the son be \(S\).
The ratio of their ages is given as 3 : 1.
\[ \frac{F}{S} = \frac{3}{1} \]We can express their ages in terms of a common multiplier, say \(x\).
Father's age \(F = 3x\)
Son's age \(S = 1x = x\)
The product of their ages is given as 147.
\[ F \times S = 147 \]Substitute the expressions for \(F\) and \(S\) into the product equation:
\[ (3x) \times (x) = 147 \]\[ 3x^2 = 147 \]Solve for \(x^2\):
\[ x^2 = \frac{147}{3} \]\[ x^2 = 49 \]Solve for \(x\):
\[ x = \sqrt{49} \]\[ x = 7 \] (Since age cannot be negative, we take the positive root.)Now, calculate their individual ages:
Father's age \(F = 3x = 3 \times 7 = 21\) years
Son's age \(S = x = 7\) years
Finally, find the sum of their ages:
Sum \( = F + S = 21 + 7 = 28\) years
C) 28 — The sum of their ages is 28 years, as calculated by finding the common multiplier from the product of their ages and then summing their individual ages.
This problem involves analyzing statements and conclusions based on the principles of syllogism, often visualized using Venn diagrams. We will draw Venn diagrams for the given statements and then check which conclusions logically follow from these diagrams.
D) Only conclusion I follows
Conclusion I ("Some plastics are shoes") is definitely true because if some shoes are covers and all covers are plastics, then those shoes that are covers must also be plastics.
The question asks to identify the fossil fuel formed from the decomposition of vegetable matter under specific conditions: under water, by anaerobic bacteria, and in the absence of oxygen. This describes the formation process of a particular type of fossil fuel.
A) Natural gas — Natural gas, particularly biogenic methane, is formed when organic matter (like vegetable matter) decomposes in anaerobic environments (without oxygen) under water, often facilitated by anaerobic bacteria. This process is a perfect match for the description provided in the question.
This question tests logical reasoning, specifically the ability to evaluate conclusions based on given statements. We need to determine the likelihood of the conclusion being true, given the two statements provided.
D) The conclusion drawn is probably true. Based on the statements, we know oxygen is a gas and the cylinder contains some gas. It is possible that the gas in the cylinder is oxygen, but it is not certain. Thus, it is 'probably true' rather than 'definitely true'.
This is a coding-decoding type of verbal reasoning question. The strategy is to first identify the real-world object that performs the stated function and then find what that real-world object is called in the given coded language.
Therefore, in this coded language, 'ink' is used for washing clothes.
B) Ink — In the real world, soap is used for washing clothes. According to the given coding, 'soap' is called 'ink'. Hence, 'ink' is the correct answer.
Read the following information carefully and answer the question given below.
Ten friends are sitting in two parallel rows of six seats each. One seat is vacant in each row. V, W, X, Y and Z are sitting in row-1 facing south. I, J, K, L and M are sitting in row-2 facing north. Each likes different brand of Shoes—Adidas, Nike, Puma, Bata, Lee Cooper, Nivia, Provogue, Lotto, Woodland and Sparx.
L sits third to the right of K and likes Bata. Only two people sit between J and the vacant seat. J does not like Lee Cooper or Puma. Z is not an immediate neighbour of X. W likes Sparx. The one who likes Puma faces the one who likes Lotto. The one who likes Puma sits opposite to the one who sits on the third right of the person who sits opposite to L. X is not an immediate neighbour of Y. M, who likes neither Lee Cooper nor Nivia, does not face the vacant seat. Neither L nor K sits at any of the extreme ends of the row. Y faces K. Vacant seats are not opposite to each other. Two seats are there between X and W, and W sits on the third right of the one who likes Sparx. The one who likes Woodland faces the one who likes Bata. The persons who like Adidas and Lotto are adjacent to each other. Vacant seat of row-1 is not an immediate neighbour of Y. J sits at one of the extreme ends of the row. K does not like Adidas and Lotto. Vacant seat of row-1 does not face L, who does not sit at any of the extreme ends of the row.
Who among the following faces the vacant seat of row-2?
The question asks to identify the country that launched RAVANA-1, its first research satellite. This requires knowledge of recent space exploration milestones, particularly those related to South Asian nations.
Correct Option: A) Sri Lanka — RAVANA-1 is indeed the first research satellite of Sri Lanka. It was launched into orbit in 2019.
The question asks to identify the device that converts sound waves into electrical signals. This involves understanding the basic function of common audio devices.
C) Microphone — A microphone is a transducer that converts sound energy into electrical energy. When sound waves hit the diaphragm of a microphone, they cause it to vibrate. These vibrations are then converted into varying electrical signals, which can be amplified, recorded, or transmitted.